I'm looking at the little Martin guitars, because they look easy and comfortable to play, plus I'm big on john mayer and ed sheeran who use them a lot.

I know that the "e" on the end of model numbers shows whether it's and electro acoustic or not, but can someone explain what's the difference between the models? Ie the LXM, LX1, LX, and the LXMK2

Cheers